MySQL

Premise: MySQL database version can not be less than 5.5.The first method: Baidu a search a lot of, the main content is: Modify the MySQL configuration file (need to restart the database), modify the table and field encoding, are changed to

Writing a database client using VS2017Specific settings can be found in the following sectionsHttps://dev.mysql.com/doc/connector-cpp/en/connector-cpp-apps-windows-visual-studio.htmlHttp://www.cnblogs.com/flipped/p/6810216.htmlEncounter some

Apahce./configure--prefix=/usr/local/apache--enable-module=most--enable-shared=maxMakeSu RootMake installRun Apahce/usr/local/apache/bin/apachectl startStop Apache#/usr/local/apache/bin/apachectl stopOpen your browserFirefoxRestarting the

Experimental Summary:This experiment hosts the system as CentOS 6.9 by default.HOST1 host as Remote log client Installation: Rsyslog (default installation), Rsyslog-mysqlHost2 host as Log server installation: MySQL (default installation, can also

Create student table IF not EXISTS ' student ' ( ' id ' int (4) unsigned not NULL auto_increment, ' name ' varchar (12) Not null, ' sex ' enum (' Male ', ' female ') not null default ' male ', ' age ' tinyint (4) ' is not null default ' ' ', '

MySQL cmd Common command mysql cmd Common command has the following command: Put the Mysql.exe in the bin directory under the MySQL directory under C:\WINDOWS, you can execute the following commandConnection: Mysql-h host address-u user name-P user

1. What is a storage engine?The storage engine is similar to recorded video files, can be converted into different formats, such as Mp4,avi, and stored on our disk will also exist in different types of file systems such as: Windows common Ntfs,fat32

Language classification 1>, DDL (Data Definition Language)A data definition language that defines and manages all objects in a database. Example: Create, Alter, Drop.2>, DML (Data munipulation Language)A data manipulation language used to

The previous article briefly describes the workflow, prerequisites, and constraints of MySQL group replication, and compares the features of the traditional asynchronous replication set semi-synchronous replication. This article describes the

The Nineth chapter in MySQL, limit and not in case I. Project of the case 1. Create a database statement:#创建数据库CREATE DATABASE ' schooldb ';Use ' schooldb ';#创建学生表CREATE TABLE ' Student ' (' Sid ' INT (4) auto_increment not NULL PRIMARY KEY COMMENT '

The database needs to accommodate a variety of languages and characters to support different character sets (Character set), and each character set has its own collation (Collation).One. Character SetCharacter set, which is a collection of encodings

Original link: Http://isky000.com/database/mysql-perfornamce-tuning-schemaMany people have the database design paradigm as the database table structure of the "bible", that as long as the requirements of this paradigm design, you can make the design

In the last few days in the project to the win on the database to Ubuntu, so the first thing is to export the SQL script from the win Navicat directly, and then into the Ubuntu import will report errors, skip the error continues to cause the

Original: http://blog.csdn.net/yjz_sdau/article/details/52135050(1) The simplest method of modification is to modify the character set key values in the MySQL My.ini file,such as Default-character-set = UTF8Character_set_server = UTF8After the

The installation of MySQL on Ubuntu is very simple and requires just a few commands to complete.sudo apt-get install mysql-server (uninstall is sudo aptitude purge mysql-server but will be installed sudo apt-get install aptitude to use)Ubuntu 16.04

Reprint: http://www.cnblogs.com/picaso/archive/2012/05/17/2505895.html0. User management:1. New User:>create USER name identified by ' Ssapdrow ';2. Change Password:>set PASSWORD for Name=password (' FDDDFD ');3. Rights Management>show GRANTS for

1. What is a transactionA transaction is a combination of one or more database operation statements with acid,4 characteristics.Atomicity: Either all succeeds or all is undoneIsolation: Transactions are independent from one another and are not

Problem Description: The local host connected to the MySQL times error on the server: Host ' xxx ' is not allowed to connect to this MySQL server;Server configuration, Windows Server;Analysis: This is a MySQL access issueWorkaround:1. Enter the

Use mysqlfrm to restore the frm table structure and mysqlfrmfrm table structure 1. Install mysqlfrm ----------------------------- Because mysqlfrm is part of the mysql-utilities tool, we can install mysql-utilities, download the corresponding source

The minimum id for Mysql to delete duplicate data and the minimum id for mysql to retain Search for the data with the smallest id to delete duplicate data on the Internet. The method is as follows: 1 DELETE 2 FROM 3 people 4 WHERE 5